The sudden death of Jack Layton, beloved leader of the NDP party in Canada, came as a surprise only weeks after he announced the return of a "different" type of cancer. Almost immediately, a powerful and moving chalk memorial popped up at Toronto's City Hall.
In a letter to Canadians released following his death, he wrote: "My friends, love is better than anger. Hope is better than fear. Optimism is better than despair. So let us be loving, hopeful and optimistic. And we'll change the world." I believe these words will now live on for generations to come. You'll be missed, Jack.